SR-RABBIT POLYPEPTIDE-4 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SR-RABBIT POLYPEPTIDE-4

Safety grade: A

A protein derived from rabbit sources that helps improve skin firmness and elasticity. This ingredient works by supporting the skin's natural structure, making it commonly used in anti-aging creams and serums to reduce the appearance of fine lines and promote smoother-looking skin.

Graded using: COSING.

Last verified: June 9, 2026